WO2020105549A1 - Machine à laver - Google Patents

Machine à laver

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Publication number
WO2020105549A1
WO2020105549A1 PCT/JP2019/044816 JP2019044816W WO2020105549A1 WO 2020105549 A1 WO2020105549 A1 WO 2020105549A1 JP 2019044816 W JP2019044816 W JP 2019044816W WO 2020105549 A1 WO2020105549 A1 WO 2020105549A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing machine
distance measuring
distance
water tank
measuring sensor
Prior art date
Application number
PCT/JP2019/044816
Other languages
English (en)
Japanese (ja)
Inventor
領家　英之
敬彦 林
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN201980075697.XA priority Critical patent/CN113056582B/zh
Priority to JP2020558342A priority patent/JP7542440B2/ja
Publication of WO2020105549A1 publication Critical patent/WO2020105549A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a washing machine equipped with a safety device that prevents abnormal vibration of an aquarium.
  • a washing machine During dehydration in a washing machine, the shaking of the rotating tub and water tub may increase due to uneven distribution of laundry in the rotating tub, which may cause abnormal vibration.
  • a washing machine is provided with a safety device that detects when the shaking of the water tank exceeds a prescribed amount and stops the operation.
  • Patent Document 1 discloses a safety device in which a mechanical switch lever is provided outside the water tank, and when the shaking of the water tank exceeds a specified amount, the water tank abuts the switch lever to determine abnormal vibration. ..
  • the mechanical switch lever contacts the outer peripheral surface of the water tank where shaking occurs and determines abnormal vibration.
  • the mechanical switch lever naturally requires an operation range from the initial position to the vibration detection position, it cannot be detected unless it is a shake that causes a certain amount of displacement.
  • the mechanical switch lever may move its mounting position to the outer peripheral side with respect to the water tub by repeating contact with the water tub as the washing machine ages. When the mounting position of the switch lever moves in this way, the displacement of the water tank that can be detected becomes larger (the vibration detection accuracy decreases).
  • the space between the aquarium and the outer tub (the washing machine housing) as small as possible. If the space between the water tank and the outer tank is small, a safety device using a mechanical switch lever will cause the shaking water tank to move to the outer tank before the operation is stopped due to abnormal vibration of the water tank being detected.
  • the vehicle may collide and generate a loud noise, or the outer tank may be deformed in some cases.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a washing machine that can reliably detect abnormal vibration of a water tank before a collision occurs between the water tank and the outer tank.
  • the present invention is a washing machine in which a water tank is arranged inside an outer tank, and a rotating tank is arranged inside the water tank, wherein at least one distance measuring device attached to the water tank is provided. Having a sensor, the distance measuring sensor measures the distance between the inner wall of the outer tub and the distance measuring sensor in a predetermined direction, and detects abnormal vibration of the water tank based on the measurement value of the distance measuring sensor. The operation is stopped when abnormal vibration of the water tank is detected.
  • the distance sensor is attached to the water tank, and the abnormal vibration of the water tank is detected based on the measurement value of the distance sensor (the distance between the inner wall of the outer tank and the distance sensor).
  • the distance measuring sensor that measures the distance in a non-contact manner
  • the distance measuring sensor that measures the distance in a non-contact manner basically does not cause contact with the outer tank. Therefore, the mounting position of the distance measuring sensor does not change as the washing machine ages, and high detection accuracy can be maintained.
  • the washing machine may include two distance measuring sensors, and the two distance measuring sensors may be configured such that their measuring directions are orthogonal to each other in a plan view.
  • the shaking since it is possible to detect the shaking in two directions orthogonal to each other by the two distance measuring sensors, the shaking is detected no matter which direction the shaking of the water tank occurs, and the abnormal vibration of the water tank is detected. Can be prevented more reliably.
  • At least one of the distance measuring sensors has a measuring direction facing the outer peripheral direction of the water tub, and measures a distance from an inner wall of the outer tub located closest to the distance measuring sensor. It can be configured to.
  • an inexpensive sensor such as a triangulation type can be used as the distance measuring sensor.
  • At least one of the distance measuring sensors is attached to an upper surface of the water tub, and a measuring direction thereof is an inner circumferential direction of the water tub, and the distance measuring sensor is the farthest from the distance measuring sensor. It may be configured to measure the distance from the inner wall of the outer tank at a different position.
  • the washing machine of the present invention can detect the shaking of the aquarium with a small displacement by using the distance measuring sensor that measures the distance in a non-contact manner, and the aquarium of the aquarium can be reliably detected before a collision occurs between the aquarium and the outer tub. This has the effect of being able to detect abnormal vibration. Further, the distance-measuring sensor that measures the distance in a non-contact manner also has an effect that the mounting position of the distance-measuring sensor does not change over the years of use of the washing machine and high detection accuracy can be maintained.
  • FIG. 3C is a schematic view of the inside of the washing machine viewed from the upper surface side. It is a figure which shows the measuring direction of the distance measurement sensor in the washing machine of Embodiment 1, and is the schematic diagram which looked at the inside of a washing machine from the upper surface side. It is a figure which shows the modification of the washing machine of Embodiment 1, (a) is the schematic cross section which looked at the washing machine from the front side, (b) is the schematic figure which looked at the inside of the washing machine from the upper surface side.
  • FIG. 1 is a diagram showing a schematic configuration of a washing machine 10 according to the first embodiment, (a) is a schematic cross-sectional view of the washing machine 10 seen from a side surface, and (b) is a front side of the washing machine 10.
  • FIG. 3C is a schematic cross-sectional view of the inside of the washing machine 10 (a state in which the lid portion 16 is removed) as viewed from the top side.
  • the washing machine 10 is configured such that a water tub 12 is arranged inside an outer tub 11 which is a casing of a washing machine, and a rotating tub 13 is arranged inside the water tub 12.
  • the water tank 12 is a tank that stores water during washing or dehydration and receives water discharged from the rotary tank 13.
  • the rotating tub 13 functions as a washing tub during washing and as a dehydrating tub during dehydration, and is rotatably provided inside the water tub 12.
  • a ring-shaped water tank cover 121 is provided on the upper surface of the water tank 12.
  • a ring-shaped balancer 14 for stably rotating the rotary tank 13 is attached to the upper edge of the rotary tank 13.
  • a lid 16 that can be opened and closed is provided on the upper portion of the washing machine 10.
  • the washing machine 10 when the rotary tub 13 is rotated during a spin-drying operation or the like, swaying occurs in the rotary tub 13 and the water tub 12 depending on the uneven distribution of the laundry in the rotary tub 13. When this shaking becomes large, it causes abnormal vibration in which the water tank 12 may collide with the inner wall of the outer tank 11. Therefore, the washing machine 10 is provided with a safety device that detects such abnormal vibration and stops the operation (stops the rotation of the rotary tub 13) when the abnormal vibration is detected.
  • the washing machine 10 has a distance measuring sensor 15 on the outer peripheral side surface of the water tank 12 as a main element of the safety device. That is, the safety device in the washing machine 10 detects the abnormal vibration based on the distance measuring sensor 15 and the measured value of the distance measuring sensor 15, and stops the operation of the washing machine 10 when the abnormal vibration is detected (not shown). )) And.
  • the distance measuring sensor 15 has a measuring direction (arrow A in the figure) facing the outer peripheral direction of the water tank 12. More specifically, the distance measuring sensor 15 is provided at a position facing any inner wall of the outer tub 11, and measures the distance L1 with the inner wall 111 at the position closest to the distance measuring sensor 15. It has become.
  • the washing machine 10 detects the abnormal vibration of the water tub 12 based on the measurement value of the distance measurement sensor 15 (the distance L1 between the distance measurement sensor 15 and the inner wall 111 of the outer tub 11), and the abnormal vibration of the water tub 12 is detected. If the operation is stopped.
  • the specific method of detecting the abnormal vibration based on the distance L1 measured by the distance measuring sensor 15 is not particularly limited in the present invention, but the following two methods are exemplified.
  • the measured value of the distance measuring sensor 15 that is, the distance L1 vibrates.
  • the distance L1 is compared with a predetermined threshold value Lth1 and abnormal vibration is detected when the distance L1 becomes a value smaller than the threshold value Lth1.
  • the threshold value Lth1 in this case is a distance at which the water tank 12 is brought too close to the inner wall 111 of the outer tank 11.
  • the distance L1 that is the measured value of the distance measuring sensor 15 is compared with the threshold value Lth1 as it is, so that the load on the control unit that performs the determination is reduced.
  • the control unit to which the distance L1 is input calculates the difference value between the maximum value Lmax and the minimum value Lmin of the vibrating distance L1 as the vibration width Lw of the water tank 12. Then, the calculated vibration width Lw is compared with a predetermined threshold value Lth2, and when the vibration width Lw becomes a value larger than the threshold value Lth2, abnormal vibration is detected.
  • the control unit needs a calculation process for calculating the vibration width Lw, but since the detection can be performed based on the displacement from the vibration center to both sides, the detection accuracy is high.
  • the shaking of the water tub 12 in the washing machine 10 is mainly caused by the unevenness of the laundry in the rotary tub 13. However, even if the start of rotation of the rotary tub 13 is biased, the rotation of the laundry will not occur to some extent. By continuing, the deviation may be leveled and the shaking of the water tank 12 may be reduced. Therefore, in the first example, the abnormal vibration is not immediately detected when the distance L1 becomes a value smaller than the threshold value Lth1, but the state in which the distance L1 becomes a value smaller than the threshold value Lth1 is equal to or greater than the specified number of times. Abnormal vibration may be detected when detected. Similarly, in the second example, the abnormal vibration may be detected when the state in which the vibration width Lw becomes a value larger than the threshold value Lth2 is detected a predetermined number of times or more.
  • the distance measuring sensor 15 is attached to the water tub 12, and the distance measuring sensor 15 separates the inner wall of the outer tub 11 and the distance measuring sensor 15 in a predetermined direction.
  • the distance L1 is measured, and the abnormal vibration of the water tank 12 is detected based on the measured value of the distance measuring sensor 15.
  • the washing machine 10 can also detect shaking of the water tub 12 having a small displacement. Therefore, the washing machine 10 can reliably detect the abnormal vibration of the water tub 12 before the collision between the water tub 12 and the outer tub 11 and prevent the collision between the water tub 12 and the outer tub 11.
  • the distance-measuring sensor 15 that measures the distance without contact basically does not cause contact with the outer tank 11. Therefore, the mounting position of the distance measuring sensor 15 does not change during the years of use of the washing machine 10, and high detection accuracy can be maintained.
  • the distance measuring sensor 15 since the measurement direction of the distance measuring sensor 15 is directed toward the outer peripheral direction of the water tank 12, and the distance measuring sensor 15 measures the distance L1 to the inner wall 111 at the closest position, the measured distance L1 is It will be a short distance.
  • an inexpensive sensor such as a triangulation type sensor can be used as the distance measuring sensor 15.
  • the type of sensor used for the distance measuring sensor 15 is not particularly limited, and an ultrasonic sensor, a laser sensor, or the like can also be used.
  • the distance measuring sensor 15 is attached to the outer peripheral side surface of the water tub 12.
  • the mounting location of the distance measuring sensor 15 is not limited to this.
  • the distance measuring sensor 15 may be attached to the upper surface of the water tank 12 (that is, the upper surface of the water tank cover 121) as shown in FIG.
  • FIG. 4 is a diagram showing a schematic configuration of the washing machine 10A according to the second embodiment, and is a schematic view of the inside of the washing machine 10A (with the lid portion 16 removed) as seen from the upper surface side.
  • the washing machine 10A includes two distance measuring sensors 15a and 15b for the water tub 12, and the distance measuring sensors 15a and 15b are separated from each other by 90 ° along the outer circumferential direction of the water tub 12. It is installed. Further, each of the distance measuring sensors 15a and 15b has a measurement direction facing the outer peripheral direction of the water tank 12, similarly to the distance measuring sensor 15 in the first embodiment. Therefore, the distance measuring sensor 15a measures the distance to the inner wall 111 shown in FIG. 4, and the distance measuring sensor 15b measures the distance to the inner wall 112.
  • the distance measuring sensors 15a and 15b are attached to each other along the outer peripheral direction of the water tank 12 at 90 ° apart from each other, the measuring directions of the two distance measuring sensors 15a and 15b are orthogonal to each other in a plan view. Specifically, the distance measuring sensor 15a can detect horizontal shaking of the water tank 12, and the distance measuring sensor 15b can detect front and rear shaking of the water tank 12.
  • the washing machine 10A is configured to stop the operation (stop the rotation of the rotary tub 13) when any of the distance measuring sensors 15a and 15b detects an abnormal vibration.
  • washing machine 10A according to the second embodiment is provided with the two distance measuring sensors 15a and 15b and detects the bidirectional shaking is as follows.
  • the shaking of the water tub 12 that occurs during dehydration operation is mainly caused by the centrifugal force of the rotary tub 13 when the laundry in the rotary tub 13 is uneven.
  • the water tub 12 does not always shake evenly in all directions. May be larger than the shaking in the other direction.
  • the sway in the front-back direction may be greater than the sway in the left-right direction.
  • only one distance measuring sensor 15 in the first embodiment can detect a shake in the left-right direction, a shake in the front-rear direction cannot be detected, and when the shake of the water tank 12 largely occurs in the front-rear direction, the operation is properly performed. It is impossible to stop the operation, and abnormal vibration of the water tank 12 may occur.
  • the washing machine 10A according to the second embodiment is provided with the two distance measuring sensors 15a and 15b and can detect the shake in two orthogonal directions. Therefore, no matter which direction the shaking of the water tank 12 occurs, this can be detected and the abnormal vibration of the water tank 12 can be more reliably prevented.
  • the washing machine 10A uses the distance measuring sensor only for the shake detection in one direction when detecting the shake in two orthogonal directions, and the conventional technique for detecting the shake in the other direction.
  • the mechanical switch lever used in the safety device of 1. may be used.
  • the washing machine design can be easily changed.
  • the conventional mechanical sensor is used in the direction in which the distance between the water tank 12 and the outer tank 11 is relatively large, and the measurement with high detection accuracy is performed in the direction in which the distance between the water tank 12 and the outer tank 11 is relatively small. It is preferable to use a distance sensor.
  • FIG. 5 is a figure which shows schematic structure of the washing machine 10B which concerns on this Embodiment 3, and is the schematic diagram which looked at the inside (state which removed the cover part 16) of the washing machine 10B from the upper surface side.
  • the washing machine 10B has the distance measuring sensor 15 on the upper surface of the water tank 12 (that is, the upper surface of the water tank cover 121). As shown in FIG. 5, the distance measuring sensor 15 has a measuring direction (arrow B in the drawing) directed toward the inner circumferential direction of the water tank 12. As a result, the distance measuring sensor 15 measures the distance L2 with the inner wall 113 located farthest from the distance measuring sensor 15.
  • the distance L2 measured by the distance measuring sensor 15 of the washing machine 10B is longer than the distance L1 in the first embodiment, but the displacement of the aquarium 12 depending on the shaking is similar to the distance L1. Therefore, the washing machine 10B according to the third embodiment can detect the abnormal vibration of the water tub 12 based on the distance L2 measured by the distance measuring sensor 15 according to the same principle as that of the first embodiment.
  • the washing machine 10B has an advantage that the distance measuring sensor 15 can detect the jumping out of the laundry from the rotary tub 13.
  • the laundry may fly out of the rotary tub at the time of starting a washing or dehydration operation, and a part of the washed-out laundry may be placed on the upper surface of the aquarium cover. Since such jumping out of the laundry does not particularly increase the shaking of the aquarium, it cannot be detected by the conventional safety device that detects the shaking of the aquarium. However, it can be easily imagined that if the washing machine continues to operate in a state where the laundry has jumped out of the rotary tub, the laundry that has jumped out may be damaged. Therefore, when the laundry jumps out of the rotary tub, it is desirable to detect this and stop the operation.
  • the measurement direction of the distance measuring sensor 15 faces the inner circumferential direction of the water tub 12. Therefore, as shown in FIGS. 6A and 6C, when the popped-out laundry LD is on the measurement direction side of the distance measuring sensor 15, the distance measuring sensor 15 should measure the distance to the laundry LD. And the measured value becomes extremely short. As a result, the washing machine 10B can detect the jumping out of the laundry from the rotary tub 13 by the distance measuring sensor 15, and can stop the operation when detecting this.
  • the distance measuring sensor 15 is arranged on the upper surface of the aquarium cover 121.
  • the distance measuring sensor 15 is covered with an inclined cover on the upstream side in the rotation direction of the rotary tank 13 (arrow C in the figure) at the location of the distance measuring sensor 15. .. Thereby, the laundry LD that has jumped out can be prevented from being caught by the distance measuring sensor 15.
  • the present invention is not limited to this and a drum type washing machine. It can also be applied to dryers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne une machine à laver (10) est qui est conçue de telle sorte qu'un réservoir d'eau (12) est disposé à l'intérieur d'un réservoir externe (11) qui est un bâti de machine à laver, et un réservoir rotatif (13) est disposé à l'intérieur du réservoir d'eau (12). Le réservoir d'eau (12) comprend un capteur de mesure de distance (15) fixé sur une surface latérale périphérique externe de celui-ci, et le capteur de distance (15) mesure la distance entre le capteur de mesure de distance (15) et la paroi interne du réservoir externe (11) dans une direction prescrite. La machine à laver (10) détecte une vibration inhabituelle du réservoir d'eau (12) sur la base d'une valeur de mesure obtenue par le capteur de mesure de distance (15), et arrête son fonctionnement après détection d'une vibration inhabituelle du réservoir d'eau (12).
PCT/JP2019/044816 2018-11-21 2019-11-15 Machine à laver WO2020105549A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980075697.XA CN113056582B (zh) 2018-11-21 2019-11-15 洗衣机
JP2020558342A JP7542440B2 (ja) 2018-11-21 2019-11-15 洗濯機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018218365 2018-11-21
JP2018-218365 2018-11-21

Publications (1)

Publication Number Publication Date
WO2020105549A1 true WO2020105549A1 (fr) 2020-05-28

Family

ID=70773598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/044816 WO2020105549A1 (fr) 2018-11-21 2019-11-15 Machine à laver

Country Status (4)

Country Link
JP (1) JP7542440B2 (fr)
CN (1) CN113056582B (fr)
TW (1) TWI839410B (fr)
WO (1) WO2020105549A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112481934A (zh) * 2020-11-20 2021-03-12 合肥美菱物联科技有限公司 一种洗衣机偏心检测装置及其检测方法
CN114941230A (zh) * 2022-06-30 2022-08-26 海信冰箱有限公司 一种洗衣机及其控制方法

Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH03141995A (ja) * 1989-10-27 1991-06-17 Toshiba Corp 洗濯機
JPH04303499A (ja) * 1991-01-26 1992-10-27 Samsung Electronics Co Ltd 洗濯機の振動制御装置

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Publication number Priority date Publication date Assignee Title
JPH07178287A (ja) * 1993-12-22 1995-07-18 Matsushita Electric Ind Co Ltd 洗濯機
JP3522996B2 (ja) * 1996-12-25 2004-04-26 シャープ株式会社 全自動洗濯機
AU2003259588B2 (en) * 2003-01-20 2006-03-02 Lg Electronics Inc. Washing machine having floating laundry detecting means and method for controlling the same
JP2012223489A (ja) * 2011-04-22 2012-11-15 Toshiba Corp 洗濯機
CN103215786B (zh) * 2013-03-22 2017-07-18 无锡小天鹅股份有限公司 洗衣机
US10273623B2 (en) * 2016-09-22 2019-04-30 Midea Group Co., Ltd. Laundry washing machine incorporating distance sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03141995A (ja) * 1989-10-27 1991-06-17 Toshiba Corp 洗濯機
JPH04303499A (ja) * 1991-01-26 1992-10-27 Samsung Electronics Co Ltd 洗濯機の振動制御装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112481934A (zh) * 2020-11-20 2021-03-12 合肥美菱物联科技有限公司 一种洗衣机偏心检测装置及其检测方法
CN114941230A (zh) * 2022-06-30 2022-08-26 海信冰箱有限公司 一种洗衣机及其控制方法

Also Published As

Publication number Publication date
CN113056582A (zh) 2021-06-29
CN113056582B (zh) 2023-08-29
TW202020262A (zh) 2020-06-01
TWI839410B (zh) 2024-04-21
JPWO2020105549A1 (ja) 2021-10-07
JP7542440B2 (ja) 2024-08-30

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